Interesting video posted by SIG Academy, just a few points to keep in mind. Stay away from the doors. If you have room to take a step back, do so when "slicing" or how he calls it "cutting" the pie. Also remember that your gun does not always need to be pushed out and always at extension, you can clear a room, door or even a small/short hallway with your gun at a retention / anchor position, especially if you are using a flashlight. One thing to remember, there are no "one answer" for any of this, the real answer is "it depends" and your tactics may change based on your own home or the structure you are clear. Lastly, if you are clearing a home/structure solo, you better have a really good reason to do so.